Cheap Flights from Idaho Falls to Sydney

Compare Idaho Falls to Sydney flight deals

Find the cheapest month or even day of the year to fly to Sydney

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Flight deals from Idaho Falls Airport to Sydney Airport

Looking for a cheap last-minute deal or the best return flight from Idaho Falls to Sydney? Find the lowest prices on one-way and return tickets right here.

Find the cheapest month to fly from Idaho Falls to Sydney

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Idaho Falls to Sydney flights are currently cheapest in December.

Idaho Falls to Sydney: Alternative routes

Compare routes from Idaho Falls to Sydney below. You may find an airport to fly into that's cheaper, faster, or easier than Sydney.

Idaho Falls to Sydney: Flight information

The things to know before you go.
Cheapest flight foundR 9,924
Cheapest month to flyDecember

Finding cheap flights from Idaho Falls to Sydney: Frequently asked questions

The best price we found for a return flight from Idaho Falls to Sydney is R 21,207. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Idaho Falls to Sydney. But we found flights with one or more stops from R 21,207.
As of March 2026, there are no flights flying from Idaho Falls to Sydney.
The cheapest month to fly from Idaho Falls to Sydney is usually May.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Idaho Falls Airport to Sydney Airport on Sunday, 10 May 2026.
No airlines currently offer direct flights between Idaho Falls Airport and Sydney Airport. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Sydney but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Sydney is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Alaska Airlines offers the cheapest flight tickets to Sydney.

Travelling from Idaho Falls Regional Airport (IDA) to Sydney (Kingsford Smith) Airport (SYD): what you need to know

  • Sydney's timezone is UTC+11, which makes Sydney 17 hours ahead of Idaho Falls.

  • To ensure you get on your IDA to SYD flight, allow plenty of time to check in and find your gate. Turning up two hours before international departures and an hour before domestic flights is the general rule.

  • During popular months like July, it's a good idea to get to the airport earlier than normal. Plan to arrive two hours before a domestic departure and four hours ahead for international flights when you fly during peak periods in general.

  • If you'd like to explore another city along the way, consider a flight with a stopover. To see your options for tickets from Idaho Falls Regional Airport to Sydney (Kingsford Smith) Airport, deselect 'Direct flights only.' Dallas/Fort Worth International Airport is a sought-after stop between IDA and SYD.

How to find the cheapest flights from Idaho Falls Regional Airport (IDA) to Sydney (Kingsford Smith) Airport (SYD)

  • R 9,924 is the best price for a one-way Idaho Falls Regional Airport to Sydney (Kingsford Smith) Airport flight. Return flights start at R 21,207. These prices may change based on availability and demand.

  • To score cheap tickets from IDA to SYD, book as early as you can. Airlines tend to offer lower prices when flights are first released.

  • If you can be flexible with your travel dates, use the 'Whole month' search function. It'll give you the lowest price in each month when looking for your flight from Idaho Falls Regional Airport to Sydney (Kingsford Smith) Airport.

  • There's no need to check every day to see if fares have dropped when you set up a Price Alert. We'll update you as soon as a special offer becomes available on cheap flights from IDA to SYD.

  • Tailor your flights with filters. Select your preferred departure and arrival times, total journey duration and airlines. You can also sort the results by 'Best,' 'Cheapest' or 'Fastest' flights from Idaho Falls Regional Airport to Sydney (Kingsford Smith) Airport.

Handy information about Idaho Falls Regional Airport (IDA)

  • You'll find IDA at 2140 North Skyline.

  • Idaho Falls Regional Airport scores top marks for its on-time performance. 80.03% of flights that take off from IDA reach their destination on time.

  • Central Idaho Falls to Idaho Falls Regional Airport is approximately 5 kilometres. Depending on traffic, it'll take about 10 minutes to get there if you're driving, catching a cab or ride-sharing.

  • Catching public transport? You can expect a journey time of around 1 hour.

  • Have an early flight from Idaho Falls Regional Airport to Sydney (Kingsford Smith) Airport? Avoid the last-minute rush to the airport (and enjoy a little extra shut-eye) by choosing one of these stays near IDA:

Arriving at Sydney (Kingsford Smith) Airport (SYD)

  • If you're getting in on a late Idaho Falls Regional Airport to Sydney (Kingsford Smith) Airport flight, nothing tops the convenience of staying near the terminal. Collect your bags from the carousel and then be tucked up in bed not long after at one of these accommodation options near SYD:

  • Pick up a Sydney (Kingsford Smith) Airport rental car and discover Sydney and beyond with your own set of wheels. Simba car hire, Bargain Car Rentals and Yes Drive are leading providers to choose from here.

  • To get the lowest price, reserve your vehicle from Sydney (Kingsford Smith) Airport around two weeks before you set off.

Getting from Sydney (Kingsford Smith) Airport (SYD) to central Sydney

  • From Sydney (Kingsford Smith) Airport, Sydney is approximately 18 kilometres away. It takes around 20 minutes to reach the centre driving.

  • It takes around 25 minutes if you're using public transport.

When to fly to Sydney (Kingsford Smith) Airport (SYD)

  • The quietest month for a flight from Idaho Falls Regional Airport to Sydney (Kingsford Smith) Airport is April, while April is the busiest. Pick the best time to visit Sydney based on whether you prefer a bustling atmosphere or a more laid-back vibe.

  • The warmest month in Sydney is January, with temperatures ranging between 17ºC (63ºF) and 32ºC (90ºF). Lock in your flights from Idaho Falls Regional Airport to Sydney (Kingsford Smith) Airport in this month if you enjoy this type of weather.

  • If you like cooler conditions, look for a cheap ticket from IDA to SYD in July. Average temperatures are between 5ºC (41ºF) and 19ºC (66ºF) then.

Explore more of Australia

  • Canberra is just one of the many cities in Australia waiting to be discovered once you've seen the sights of Sydney. Around 241 kilometres away to the south-west, top sights here include Australian War Memorial, National Gallery of Australia and Parliament House.

  • Newcastle is another favourite destination in Australia and is around 121 kilometres north-east of Sydney. No trip is complete without seeing Newcastle Beach, Nobbys Beach and Merewether Beach.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.